Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) Colorimetry (C) (2) (-) Gas Chromatography (GC) (3) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (8) Inductively Coupled Plasma/Mass Spectrometry (ICP/MS) (1) Sample Type Blood (1) (-) Fluid (1) Serum or Plasma (1) (-) Tissue (1) (-) Urine (1) Test Area Therapeutics (3) Test Category Antihypertensives (3) Test Sub-Category Calcium Channel Blockers (3) Test Test Name 4770FL Verapamil, Fluid 4770TI Verapamil, Tissue 4770U Verapamil, Urine